phorge-phorge/src/applications/project/herald/HeraldProjectsField.php

<?php

final class HeraldProjectsField extends HeraldField {

  const FIELDCONST = 'projects';

  public function getHeraldFieldName() {
    return pht('Projects');
  }

  public function supportsObject($object) {
    return ($object instanceof PhabricatorProjectInterface);
  }

  public function getHeraldFieldValue($object) {
    return PhabricatorEdgeQuery::loadDestinationPHIDs(
      $object->getPHID(),
      PhabricatorProjectObjectHasProjectEdgeType::EDGECONST);
  }

  protected function getHeraldFieldStandardConditions() {
    return self::STANDARD_LIST;
  }

  public function getHeraldFieldValueType($condition) {
    switch ($condition) {
      case HeraldAdapter::CONDITION_EXISTS:
      case HeraldAdapter::CONDITION_NOT_EXISTS:
        return HeraldAdapter::VALUE_NONE;
      default:
        return HeraldAdapter::VALUE_PROJECT;
    }
  }

}